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Nb-Zr-Al-Mixed Oxide Supports for Rh Layer use in TWC Converters

  • US 20160354765A1
  • Filed: 06/05/2015
  • Published: 12/08/2016
  • Est. Priority Date: 06/05/2015
  • Status: Abandoned Application
First Claim
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1. A catalyst system, comprising:

  • a substrate;

    a washcoat deposited on the substrate; and

    an overcoat;

    wherein at least one of the group consisting of the washcoat and the overcoat comprises about 20 (w/w) to about 80 (w/w) of an oxide mixture and 0 (w/w) to about 80 wt % of an oxygen storage material; and

    wherein the oxide mixture comprises about 1 (w/w) to about 25 (w/w) niobium oxide, about 1 (w/w) to about 60 (w/w) zirconia, and about 30 (w/w) to about 98 (w/w) alumina.

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